336412 Aircraft Engine and Engine Parts Manufacturing

Official definition

This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) manufacturing aircraft engines and engine parts; (2) developing and making prototypes of aircraft engines and engine parts; (3) aircraft propulsion system conversion (i.e., major modifications to systems); and (4) aircraft propulsion systems overhaul and rebuilding (i.e., periodic restoration of aircraft propulsion system to original design specifications).

Source: US Census Bureau, 2022 NAICS descriptions.

When to use a different code

Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:

• Establishments primarily engaged in manufacturing guided missile and space vehicle propulsion units and parts are classified in U.S. Industry 336415, Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing.
• Establishments primarily engaged in manufacturing aircraft intake and exhaust valves and pistons and aircraft internal combustion engine filters are classified in Industry 336310, Motor Vehicle Gasoline Engine and Engine Parts Manufacturing.
• Establishments primarily engaged in the repair of aircraft engines (except overhauling, conversion, and rebuilding) are classified in Industry 488190, Other Support Activities for Air Transportation.
• Research and development establishments primarily engaged in aircraft engine and engine parts R&D (except prototype production) are classified in U.S. Industry 541715, Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology).
• Establishments primarily engaged in manufacturing aeronautical instruments are classified in U.S. Industry 334511, Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing.

Source: US Census Bureau, 2022 NAICS cross-references.

Activities listed under 336412

The Census index assigns these 12 activities to this code. If your business matches one, this is your code.

• Aircraft engine and engine parts (except carburetors, pistons, piston rings, valves) manufacturing
• Aircraft engine overhauling
• Aircraft engine rebuilding
• Aircraft turbines manufacturing
• Developing and producing prototypes for aircraft engines and engine parts
• Engines and engine parts, aircraft (except carburetors, pistons, piston rings, valves), manufacturing
• Gas turbines, aircraft, manufacturing
• Gasoline engine parts (except carburetors, pistons, piston rings, valves), aircraft, manufacturing
• Gasoline engines, aircraft, manufacturing
• Internal combustion engines, aircraft, manufacturing
• Jet propulsion and internal combustion engines and parts, aircraft, manufacturing
• Rocket engines, aircraft, manufacturing

Source: US Census Bureau, 2022 NAICS index file.

SBA size standard for 336412

To count as a small business for SBA loans and federal contracts under NAICS 336412, your business (including affiliates) must not exceed 1,500 employees. Check your business.

Source: SBA table of size standards, effective March 17, 2023.

Closest UK SIC 2007 codes

There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 2813, 3030), so treat them as a starting point and check the definition.

• 28131Manufacture of pumpsUK SIC
• 28132Manufacture of compressorsUK SIC
• 30300Manufacture of air and spacecraft and related machineryUK SIC

Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.

Similar codes to compare

• 336411Aircraft Manufacturing
• 336413Other Aircraft Parts and Auxiliary Equipment Manufacturing
• 336414Guided Missile and Space Vehicle Manufacturing
• 336415Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing
• 336419Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing